Datasheet > RT5028

RT5028

更新时间： 2024-01-21 20:15:48

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
40页	611K
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技术参数
数据手册

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RT5028 技术参数

Status：	Active	Vin (min) (V)：	3.15
Vin (max) (V)：	5.5	Number of Channels：	12
Number of Buck Converters：	4	Number of Boost Converters：
Number of Negative Outputs：		Number of LED Drivers：
Number of LDO Regulators：	6	Features：	Adjustable Frequency;Enable Input;OCP;Power Good;UVP
Package Type：	WQFN7x7-56	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/RT5028F/DS5028F-03.pdf

RT5028 数据手册

RT5028

Pin No.

Pin Name

SDA

Pin Function

Data input for I²C. Open-drain output, connect a 10kΩ pull-up resistor.

Enable control input for LDO7. Connect a 100kΩ pull-low resistor.

Enable control input for LDO8. Connect a 100kΩ pull-low resistor.

Open-Drain IRQ output node.

ENL7

ENL8

IRQ

Reset output.

RESET

21, 34, 56, 57

(Exposed Pad)

Analog ground. The exposed pad must be soldered to a large PCB and

connected to AGND for maximum power dissipation.

AGND

PWRON

REBOOT

Manual power on. Connect a 100kΩ pull-up resistor.

System power reboot. Connect a 100kΩ pull-low resistor.

MTP write protection pin. Connect a 100kΩ pull-low resistor, logic low is inhibited

and logic high is permit to write.

MTP

Select I²C or use EN pin for Bucks and LDOs. Connect a 100kΩ pull-low resistor.

As MASK_GPIO is high, ignore all EN pins.

As MASK_GPIO is low, EN pins and I²C both can control. EN pins priority is

higher than I²C.

MASK_GPIO

PWRHOLD

Power hold input. Connect a 100kΩ pull-low resistor.

SADDR

ENB4

I²C slave address. Connect a 100kΩ pull-low resistor.

Enable control input for Buck4. Connect a 100kΩ pull-low resistor.

Output voltage regulation node for Buck4.

VOUTB4S

ENB3

Enable control input for Buck3. Connect a 100kΩ pull-low resistor.

Internal switch node to output inductor connection for Buck4.

Input power for Buck4.

LXB4

VINB4

VOUTB3S

LXB3

Output voltage regulation node for Buck3.

35, 36

37, 38

Internal switch node to output inductor connection for Buck3.

Input power for Buck3.

VINB3

VOUTB2S

ENB2

Output voltage regulation node for Buck2.

Enable control input for Buck2. Connect a 100kΩ pull-low resistor.

Internal switch node to output inductor connection for Buck2.

Input power for Buck2.

41, 42

43, 44

45, 46

47, 48

LXB2

VINB2

VINB1

LXB1

Input power for Buck1.

Internal switch node to output inductor connection for Buck1.

Enable control input for Buck1. Connect a 100kΩ pull-low resistor.

Output voltage regulation node for Buck1

ENB1

VOUTB1S

VDDP

VIN

Internal bias regulator voltage. External load on this pin is not allowed.

Input power for analog base.

ENL1

Enable control input for LDO1. Connect a 100kΩ pull-low resistor.

Enable control input for LDO2. Connect a 100kΩ pull-low resistor.

Enable control input for LDO3. Connect a 100kΩ pull-low resistor.

ENL2

ENL3

is a registered trademark of Richtek Technology Corporation.

DS5028-02 September 2016

www.richtek.com

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